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We're not as lucky as you might believe...most of Oz's volcanoes are extinct, but the ones down in Victoria/SA and up here in NQ are dormant. Yes, they have been for thousands of years (last eruption up here was about 5000 years ago), but that doesn't mean they don't have any chance of going off again. There is still some remnant geothermal activity up here derived from both remnant magmatic and radiogenic heating, but it could still happen...or maybe never again. Who knows.
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